BS EN 593:2004

This European Standard specifies requirements for butterfly valves having metallic bodies for use in flanged or butt welding piping systems and used for isolating, regulating or control applications.

The PN and Class ranges are as follows:

• PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; Class 150; Class 300.

The DN range is as follows:

• DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 750; DN 800; DN 900; DN 1000; DN 1200; DN 1400; DN 1600; DN 1800; DN 2000; DN 2200; DN 2400.

DN 750 is used only for Class 150 and Class 300.

For special applications such as industrial process control valves, see BS EN 1349 and BS EN 60534-2-1.

This European Standard also covers the design and construction of butterfly valves; dimensions and tolerances; functional characteristics; application; design strength; flow characteristics; leak tightness and testing procedures for butterfly valves.